Oculus VR unveiled its Oculus Rift Virtual Reality Development Kit (DK) 2. It features a built-in latency tester, out-of-the-box engine integrations for the Unreal Development Kit, Unreal Engine 4, and Unity 4, source code, documentation, and samples. Preorders are now available for $350 with about $22 for shipping; click here for more information. It's expected to ship in July of 2014.